Tool for dressing emery-wheels.



No. 834.666. PATENTED 00130, 1906. w. FISH. TOOL FOR nnnssme EMERY WHEELS.

.- APPLICATION FILED 0013.6, 1905.

WITNES ISES- v TH: mmms PETERS cm, nusmuarou, n. c.

UNITED STATES PATENT OFFICE.

To aZZ whom it may concern.-

Be it known that I, WILLIAM FISH, a citizen of the United States, residing at the city of Everett, in the county of Middlesex and State of Massachusetts, have invented a new and useful Improved Tool for Dressing Emery-Wheels, of which the following is a specification.

This improved tool for dressing emerywheels in substance is composed of a shank or handle of suitable length continued at one end in a stirrup, a wheel of alundum, emery, or of other suitable material for the dressing of an emery-wheel and which is located between the legs or branches of the stirrup and is hun on an arbor crossing between and attache to the stirrup-legsand so as to be free to rotate, but confined against lateral movement on said arbor, and of angular or shouldered rests, one on each leg of the stirrup and arranged to be, respectively, at different distances from, but in .planes substantially parallel with, the axial line of the dressing-wheel, and so thereby when the tool is placed by its said rests u on the edge of the rest of a lathe its said ressing-wheel will be presented in an an ular direction relative ,to and across the wi th of the emery-Wheel to be dressed and which has been suitably located therefor on the spindle or arbor of the lathe, and all otherwise substantially as hereinafter described.

In the accompanying plate of drawings, forming a part of this specification, an improved tool of this invention is illustrated.

Figure 1 is in part a plan view and in part a horizontal section.- Fig. 2 is an elevation at one side. Fig. 3 is a cross-section on line 3 3, Figs 1 and 2. Fig. 4 is a similar view to Fig. 3, but showing the tool in its position for work and by dotted lines the then relative locations of the supporting edge of the lathe-rest, the axis of the lathe-spindle or arbor, and the vertical central plane of the wheel to be dressed.

In the drawings, a is the handle or shank of any convenient length; I) is the stirrup at one end and in continuation of the handle a; c is the dressing-wheel; d is the arbor of the wheel 0, and f f are the angular or shouldered rests of the stirrup b. The handle a and its stirrup end'b may be in one continuous piece of metal or of other suitable material, and

the dressing-wheel c, which may be of alundum, emery, or of any other suitable material, is located between the parallel side legs Specification of Letters Patent.

Application filed October 5. 1906.

Patented Oct. 30, 1906. Serial No. 281.514.

or branches of the stirrup, and across from one to the other of these arms the arbor (1 extends and at one end screws into one of the stirrup-arms and at the other end it is entered into a socket g of the other stirrup-arm, and between the two arms it is surrounded by a concentric sleeve h, having at one end a collar i and at the other end portion 1', exteriorly screw-threaded and receiving a washer 1c and a screw-nut Z. The dressingwheel on the arbor through this interposed sleeve h, which is rigidly fastened to the wheel by screwing up the screw-nut Z, turns or rotates on the arbor, but is confined against lateral movement between the stirrup-arm by the screw-nut at one part and the sleeve-collar at the opposite part. m is a hole leading throughthe arm of the stirrup, which has the socket g receiving one end of the arbor, and this hole is for introducing lubricating-oil to the arbor of the wheel.

Each branch of the stirrup has a similar leg extensionn, and each extension has a similar ri ht-angular-shaped rest, these rests having t eir resting-faces) located at different distances from the axial line of the dressing-wheel and both faces are in parallel planes and also planes para 161 to the axis of the dressing-wheel, and their other faces f 3 are at right angles to their faces f When the tool is to be used, the wheel to .be dressed is first properly placed on the arbor 'or spindle of the lathe a and the dressing-wheel of the tool is presented to the peripheral edge or surface of the emery-wheel by resting it through the face f of its shouldered rests f, on the edge of the lathe-rest and with the other edges f against the front face of the lathe-rest, and as the tool-rests are at dif ferent distances from the axial line of the dressing-wheel, as described, obviously the periphery or working face of the dressingwheel is angularly presented to the periphcry or ed e of the emery-wheel which is to be dres'se substantially as shown by Fig. 4:,

in which the dotted line 1) represents the run of the supporting edge of the lathe-rest, (not shown), the dotted line g the axial line of the lathe arbor or spindle, (not shown,) and the dotted line 1" a vertical plane through the wheel to be dressed running parallel to its end faces.

Alundum, the material herein referred to, and which is the most preferable material to use, is an abrasive material manufactured from a raw material, known as bauxite, and

which is an amorphous hydrate of aluminium transformed into a pure crystalline abrasive in electric furnaces by a process patented in this and foreign countries.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

A tool for dressing emery-wheels, comprising a handle (1, having a stirrup-shaped end b, and arbor d extending between and rigidly confined in the opposite branches or arms of said stirrup end I), a sleeve it free to rotate but confined against lengthwise movement on said arbor, a dressing-wheel 0 confined on said sleeve h and rotating therewith,

and a leg extension n on each branch of said stirrup end I) and each of whichleg extensions has two similar resting faces f and f, with the resting-faces f at different distances from, but both in parallel planes and also in planes parallel to the axis of said dressing-wheel, and with both resting-faces f ,f of each at right angles to each other.

In witness whereof I have hereunto set my hand in the presence of two subscribing Witnesses.

WILLIAM FISI-I. Witnesses:

ALBERT W. BROWN, MARION E. BROWN. 

